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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11015

Title: The Adaptive Response of Wild and Mutant Type Of Anabaena Flos – Aquae to The Polychrinated Pesticide Endosulfan.
Authors: Shehata Afaf. I
F. F. Al-Aqeel
I. A. Arif
Keywords: Anabaenafios-aquae
CWorophylls, Cyanobacteria
N-methyl-N-nitro- N -nitrosoguanidine
Issue Date: 2000
Publisher: Publisher Saudi. J. Biol. Sci., Vol.
Citation: 7, No. 2
Abstract: The effect of endosulfan, a hexacWorinated pesticide, on the growth, pigmentation and total nitrogen of the wild type and mutagenised cells of Anabaena fios-aquae was investigated. The pattern of response to pesticide stress in wild and mutant type was the same. Growth reappeared in both groups after a initial lag period in presence of endosulfan. The duration of this lag period increased upon increasing doses of pesticide. Quantitative estimation of pigments in wild and mutant types showed an adaptive response in mutant more than the wild type by progressive increase in the rate of absorption up to the higher concentration of 4.4 mg.l-I of ensosulfan. The amount of N -content responded differently by increasing the concentration of endosulfan in wild and mutant type. The difference in the adaptive response between wild and mutant type was observed only in the concentration of pesticide that could be tolerated, with the mutant tolerating 2.5 fold more.
URI: http://hdl.handle.net/123456789/11015
Appears in Collections:College of Science

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